What are the main disease processes we should look for in every post-syncope ECG? What can’t we afford to miss? Which subtle signs can point to a sinister diagnosis? In this segment, Malcolm Thaler and Matt Delaney review the most common and dangerous cardiac causes of syncope and how they may show up on ECG.

QT measured from the very beginning of the QRS to the very end of the T : \|....................|''''| .Represents time taken for ventricular depolarisation to repolarisation .The time of ventricular systole .Normal QT just less than half the RR .Ed Burns : Life in the Fast Lane November21 2017 .

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